# What does Gelfand, Rennert & Feldman use?

Gelfand, Rennert & Feldman (grfllp.com) shows public evidence of 16 tools, according to runsonwhat (last checked 2026-10-19).

- Industry: Financial Services
- Size: 201–1,000 employees
- Based in: Century City, United States
- Founded: 1967
- LinkedIn: https://www.linkedin.com/company/gelfand-rennert-

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [WP Engine](https://www.runsonwhat.com/reverse/wpengine) | Hosting & Cloud | Custom domain, Website code |  |

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [jQuery](https://www.runsonwhat.com/reverse/jquery) | Frontend | Website code |  |
| [Google Fonts](https://www.runsonwhat.com/reverse/google-fonts) | Media & UI | Website code |  |

## Data & Observability

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Analytics](https://www.runsonwhat.com/reverse/ga) | Analytics | Website code |  |
| [Google Tag Manager](https://www.runsonwhat.com/reverse/gtm) | Analytics | Website code |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [WordPress](https://www.runsonwhat.com/reverse/wordpress) | Website & CMS | Website code |  |
| [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code |  |
| [Yoast SEO](https://www.runsonwhat.com/reverse/yoast) | Website & CMS | Website code |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records |  |
| [Apple Business](https://www.runsonwhat.com/reverse/apple) | Workspace | DNS verification records |  |
| [GlobalSign](https://www.runsonwhat.com/reverse/globalsign) | Security & Compliance | DNS verification records |  |
| [Mimecast](https://www.runsonwhat.com/reverse/mimecast) | Security & Compliance | Email records |  |
| [DocuSign](https://www.runsonwhat.com/reverse/docusign) | Finance & Legal | DNS verification records, Website code |  |
| [Sophos](https://www.runsonwhat.com/reverse/sophos) | Security & Compliance | DNS verification records |  |
| [Zscaler](https://www.runsonwhat.com/reverse/zscaler) | Security & Compliance | DNS verification records |  |
| [Reftab](https://www.runsonwhat.com/reverse/reftab) | Dev Tools | DNS verification records |  |

## FAQ

### What tools does Gelfand, Rennert & Feldman use?

As of October 2026, runsonwhat has found 16 tools at Gelfand, Rennert & Feldman (grfllp.com) in public records. Edge & Hosting: WP Engine. Application: jQuery and Google Fonts. Data & Observability: Google Analytics and Google Tag Manager. Go-to-market: WordPress, Google Ads and Yoast SEO. Company Ops: Microsoft 365, Apple Business and GlobalSign. Last checked October 19, 2026.

### What cloud does Gelfand, Rennert & Feldman run on?

Gelfand, Rennert & Feldman uses WP Engine for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found WP Engine through a subdomain that points at WP Engine and code on grfllp.com. WP Engine is used by 51,191 companies runsonwhat tracks.

### What email provider does Gelfand, Rennert & Feldman use?

Gelfand, Rennert & Feldman uses Microsoft 365 for email and office software, alongside Apple Business, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365. Microsoft 365 is used by 710,116 companies runsonwhat tracks.

### What analytics tools does Gelfand, Rennert & Feldman use?

Gelfand, Rennert & Feldman uses Google Analytics for analytics, alongside Google Tag Manager, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on grfllp.com. Google Analytics is used by 878,019 companies runsonwhat tracks.

### What is Gelfand, Rennert & Feldman's website built with?

Gelfand, Rennert & Feldman uses WordPress for its website, alongside Yoast SEO, according to runsonwhat (October 2026). runsonwhat found WordPress through WordPress code on grfllp.com. WordPress is used by 596,023 companies runsonwhat tracks.

### Does Gelfand, Rennert & Feldman use jQuery?

Yes. runsonwhat found jQuery at Gelfand, Rennert & Feldman through jQuery code on grfllp.com. jQuery is a Frontend tool used by 914,528 companies runsonwhat tracks.

### Which companies have a tech stack similar to Gelfand, Rennert & Feldman's?

The companies with the stacks most like Gelfand, Rennert & Feldman's are Visable, Velocity Risk, Cleerly and Strategic Financial Solutions Ny, according to runsonwhat (October 2026). Each shares 2 to 7 tools with Gelfand, Rennert & Feldman, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what Gelfand, Rennert & Feldman uses?

runsonwhat reads public records only. Of the 16 tools at Gelfand, Rennert & Feldman, 7 were found through code on grfllp.com, 6 through DNS records, 2 through email records and 1 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and grfllp.com about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/grfllp.com (updated October 2026). Counts are companies with direct public evidence of the tool (DNS records, certificates, website code, a real-browser crawl, subprocessor lists), so they are lower bounds. Methodology: https://www.runsonwhat.com/methodology.